Tai He Tong Bao in seal script / Blank. 44mm, 15.5 grams. Hartill 18.63.

Taihe Tongbao 10-cash coins were large-denomination bronze issues of the Jin dynasty (1115–1234), struck during the reign of Emperor Zhangzong (r. 1190–1208) under the Taihe era name (1201–1208). These impressive coins bear the four-character inscription in an elegant seal script traditionally associated with the emperor's own calligraphy. They are substantially larger and heavier than ordinary cash coins and were intended to circulate at a nominal value of ten standard cash. Taihe Tongbao 10-cash pieces are particularly admired for their bold casting, refined seal-script inscription, and status among the most visually distinctive large cash coins of the Jin period.

The Jin, founded by the Jurchens (older Western literature often calls them “Tartars”), ruled northern China after overthrowing the Liao and driving the Northern Song south; their coinage nevertheless closely followed Chinese monetary and calligraphic traditions.